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| author |   Hans de Goede <hdegoede@redhat.com> | 2019-12-17 20:08:11 +0100 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-12-19 23:01:52 +0100 |
| commit | d21a91629f4b8e794fc4c0e0c17c85cedf1d806c (patch) | |
| tree | 4d6e360a1fb58c3e9dd6219efbc692539a263bbd | |
| parent | ACPI: video: Use native backlight on Lenovo E41-25/45 (diff) | |
| download | wireguard-linux-d21a91629f4b8e794fc4c0e0c17c85cedf1d806c.tar.xz wireguard-linux-d21a91629f4b8e794fc4c0e0c17c85cedf1d806c.zip | |
ACPI: video: Do not export a non working backlight interface on MSI MS-7721 boards
Despite our heuristics to not wrongly export a non working ACPI backlight
interface on desktop machines, we still end up exporting one on desktops
using a motherboard from the MSI MS-7721 series.
I've looked at improving the heuristics, but in this case a quirk seems
to be the only way to solve this.
While at it also add a comment to separate the video_detect_force_none
entries in the video_detect_dmi_table from other type of entries, as we
already do for the other entry types.
Cc: All applicable <stable@vger.kernel.org>
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1783786
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/acpi/video_detect.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index 13ce1bb9facf..419f814d596a 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -352,6 +352,11 @@ static const struct dmi_system_id video_detect_dmi_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "Precision 7510"), }, }, + + /* + * Desktops which falsely report a backlight and which our heuristics + * for this do not catch. + */ { .callback = video_detect_force_none, .ident = "Dell OptiPlex 9020M", @@ -360,6 +365,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 9020M"), }, }, + { + .callback = video_detect_force_none, + .ident = "MSI MS-7721", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "MSI"), + DMI_MATCH(DMI_PRODUCT_NAME, "MS-7721"), + }, + }, { }, }; |